Professor Parimal Tripathi (Dharmendra) is a botany professor who falls in love with Sulekha Chaturvedi (Sharmila Tagore) during a women's college botany excursion. Prof. Parimal Tripathi helps the bungalow watchman to get to his village downhill to enable him to see his grandson who's fallen ill. Meanwhile, he disguises himself as the bungalow watchman to protect the old man's job. Sulekha finds out one day about the cover-up and is charmed on seeing Parimal's real personality. They both get married. Parimal loves playing pranks and is the antithesis of regular professors. Sulekha, on the other hand, is in awe of her jijaji (brother-in-law) Raghavendra (Om Prakash). She considers her jijaji to be highly intellectual and looks upon him as her idol. Parimal develops an inferiority complex thanks to Sulekha's excessive praise of her jijaji and decides to prove that he is in no way a lesser mortal. Jijaji, meanwhile, has written a letter to Haripad bhaiyya (David Abraham Cheulkar) asking him to send a driver who can speak good Hindi because his present driver James D'costa (Keshto Mukherjee) uses improper dialect. This provides the perfect opportunity for Parimal to get to see and interact with jijaji. Parimal becomes Pyare Mohan Ilahabadi, a motor-mouth driver who pretends to hate the English language and so speaks only Hindi. So begins the comedy of errors, as Parimal and Sulekha play prank after prank on the unsuspecting jijaji.